Improvement in induction apparatus for lighting by electricity



4.Shcets-Sheet 1. J. B.. FULLER. Induction Apparatus for Lighting byElectricity.

No. 210,317. Patented Nov. 26,1878.

ma@ QW N.PETES, FHOTOLITHOGRAFHR, WASHINGTONy D C.

4 Sheets-Sheet 2.

J. B. FULLER. Induction Apparatus icil Lighting by Electricity.

No. 210,317. Patented Nov. 26,1878.

mi@ @mi generator:

MFETERS, PHOTO-UTHOGRAPNER, wAsmNGTON. D. C.

4 eeeee s-Sheet 3.

J. B. FULLER.

Induction Apparatus for Lighting by Electricity,

No. 210,317. Patented Nov. 26,1878.

O 111111 Hitt' O tft/Hf 11111" 4 Sheets-Sheet 4,

J. B. FULLERlv Induction Apparatus for Lighting by Electricity.

No. 210,317. Patented Nov. 26,1878.

METERS, FHDTO-UTAOGRAPMER, WASHiNGTON. DA C.

UNITED STATES PATENT OFFICE,

JTM B. FULLER, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN INDUCTION APPARATUS FOR LIGHTING BY ELECTRICITY.

Specification forming part ol` Letters Patent N0. 210,317, datedNovember 20, 1873; application tiled September 30, 1878.

To alt whom it may concern:

Be it known that l, JIM BILLTNGS FULLER, of Brooklyn, New York, haveinvented a new and usei'ul lmprovement in Electro-Magnetic Apparatus,lor the distribution oi" electric currents, lor electric illumination,and other similar purposes, ot' which the following' is a specification:

rlhe object ot' this invention is to operate along the line oi' a mainelectric circuit a large number of small lights, each being placed in alocal circuit, whose currents are caused by the action ot' the currentsin the main circuit upon magnets ot' peculiar construction, around thepoles of which the local currents How.

The nature of the invention will be understood by the following'description.

ln the drawin Figure l represents a side elevation et' the apparatusconnected for a single light, without the governor. Fig'. 2 is al topsection, and Fie'. 3 an end elevation, of the same. Figs. l andrepresent plans of such apparatus connected for two and four lights,respectively. Fig. G shows the mode ot' arranging along aline severalsuch apparatus. ligs. i' and S represent elevations, at right angles teeach other, ot' such apparatus, with the lamps and governorso l employi'cr this invention two magnetcores, arranged parallel with cach other,and connected magnetically at the ends, as shown. Around the center ofeach oi' these cores is a soi'tiron head, and at a proper distance 'fromeach s" e oft' this is a head ot insulating material. the outer ends ot'these cores are coiled with insulated copper wire, and so connectedtogether and to the electric generator as to produce, when in action,two consequent opposite magnet-ic poles, at N and 4S. A, l, il, il), andE represent the connections ot these coils. l"

i)ctv-.een the iron heads and these coils are uw' d smaller coils ofinsulated wire, the tlnei e, l' of which depends upon the tensiencli'the current required.

Clhere is an iron arm, ii, hinged to one oil the iron heads, so as toswing over upon the seat O, connecting magnetically the poles N and S,as shown. in Figs. 7 and 8.

Now, it' electric currents be sent through the main circuit, iiowingaround the large coils, and rapidly changing, in alternately oppositedirections, the magnet-cores will as rapidly change polarity, and thesechanges will induce in the small coils electric currents of greater orless tension, according to the neness of the wire composing the smallcoils.

In the circuit or" each of the small coils may be placed a lamp, F, ofminimum illuminatin capacity, as shown in Fig. 5.

Two small coils may be connected together, parallel or in series, iorproducing a light of medium capacity, as shown in 'Fig'. el, or the foursmall coils may be connected, for producing' one light of maximumcapacity, as shown in Figs. l and 2.

These connections for producing' any desired changes in the circuits aremade by means of ordinary switches, plugs, or keys, arranged in anyconvenient manner, and therefore are not shown. rlhe lamps ma-y be ofany ordinary kind desired. I prefer, however, those employing luminouspoints heated to incandescence, rather than those in which the electricarc is produced.

rllhe arm M acts as a governor of the light, by strengthening orweakening the magnetic poles, and thereby varying the strength of thecurrent.

Any number of such apparatus which the electro-motive force ofthegenerator will supply may be arranged along the line ot a conductor, thelarge coils being' included in the circuit, and, by means oi" a switchin the local circuits, each or any lamp maybe lighted or extinguishedindependentlyfroin. the others.

A magneto-electric machine of any ordi,` nary form which will producealternating' cur rents may be used in connection with the main circuit.

I am aware that electric lights have been arranged in the secondarycircuit of inductionn coils of various forms, and therefore do not claimthat feature broadly. f

I claiml. The double electromagnet herein de,d scribed, the main coilsof which are included in the circuit of a main conductor from a gen*e'ator of alternating' electric currents, producing' in said magnetconsequent magnetic poles, as shown, and around which poles are coiledhelices oli' wire t'or receiving' the currents induced by thepolarchanges, said heli- 3. The connecting-arm M and the seat O, ces beingincluded in the local circuit with the arranged substantially as shownanddescribed,

lamp. for governing the amount of light.

2. The combining of the several polar heli- JIM BILLINGS FULLER. ces, asshown and described, for producing .Witnesscsz one, two, or four lights'from the same instru- JOHN CUMMINs,

ment. J i N. CRANDALL.

